achromatism

From the characteristic of harmonic relief patterns, the a thermalization and achromatism of harmonic diffractive element have been studied in the paper.

从谐衍射元件的理论出发，讨论了谐衍射透镜在消色差和消热差时的特性。

Using the achromatism characteristic of reflecting system, we has used the Schwarzschild structural to design the objective lens of laser micromanipulator.

利用反射系统无色差的特性，采用了Schwarzschild结构设计了激光显微操纵器物镜。

The whole world can guarantee only each time delivers identical color number cotton thread achromatism.

全球唯一能够确保每次产出的同一色号的棉线无色差。

Optimal design of rhomb-type achromatism retarder

菱体型消色差延迟器的优化设计

So the theoretical basis is provided for optimizing achromatism of the rhomb-type retarder and the material selecting scope can be extended.

从而为优化菱体型相位延迟器的消色差性，扩大材料的选取范围提供理论指导。